Patents by Inventor William Patten

William Patten has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Reactive feed stream to replace inert blowing agent feed stream in a polyurethane foam process
    Patent number: 5084486
    Abstract: A process for manufacture of molded, high resiliency, polyurethane foam substantially free of volatile organic blowing agents comprising feeding at least three streams into a mixing device to form a reaction mixture, wherein a first stream contains (i) a polyol, (ii) water, (iii) a catalyst, (iv) a surfactant; a second stream contains an organic polyisocyanate; and a third stream contains (i) water, (ii) a crosslinking/extending agent, and (iii) a process/foam modifier.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: January 28, 1992
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: William Patten, Keith D. Cavender, Frank E. Critchfield